The travels of Gulliver in four parts. Most of us know of the Liliput story but not the remaining three.
The voyage to Brobdingnag where he lives among a race of giants. This race is immense , where we have Gulliver naked stride one of the females nipples.
Part three is a journey to Laputa, Blanibarbi, Luggnagg, Glubbdubdrib, and Japan where he ends up on a flying Island.
Part Four, a Voyage to the Country of the Houyhnhnms, which is run by horses and the human like Yahoo's are are a sub-tribe scorned as filthy and uncivilised.
The book satirises religions and governments and asks "whether men are inherently corrupt or whether they become corrupted".
The satire is savage and as things have not improved in the 300 years since this was written I can imagine Swift would have nothing flattering to say on our political situations world wide at the moment.